Dive Online Chemistry Quarterly Exam

Can inductive reasoning be used to prove the following statement: "Whales evolved from cows"? Why?

No. Inductive reasoning requires human observations.

Natural history research is the same thing as scientific research.

False

Materials that can be easily hammered into new shapes without breaking them are said to be ____________.

malleable

Materials that can be stretched into thin wires are said to be _____________.

ductile

Anything that takes up space and has mass is defined as ______________.

Matter

Jet fuel burning is an example of a ____________ _____________.

chemical change

Butter melting is an example of a ___________ ___________.

physical change

A ________________ can be separated by ordinary physical means.

Mixture

Chocolate chip cookies are an example of a __________________ mixture.

heterogeneous

Seawater is an example of a _________________ mixture.

homogeneous

_______________ can be composed of two or more similar elements.

Molecules

Oxygen is an example of a _____________ element.

diatomic

The ability of a substance to carry an electrical current is known as ________________.

conductivity

________________ are composed of only one kind of element or compound.

Pure Substance

________________ tell us the type and number of atoms present in a compound.

Formulas

_________________ tell us how many molecules we have.

Coefficients

The scientific method follows the _____________ reasoning format.

Inductive

In the following compound, identify the number of atoms of each kind
of element: NH₄Cl

N- 1, H- 4, Cl- 1

In the following compound, identify the number of atoms of each kind
of element: Ca(OH)₂

Ca- 1, O- 2, H- 2

In the following compounds, identify the number of atoms of each kind
of element: 3MgSO_4.

Mg- 3, S- 3, O- 12